People and Pets
Living Their
Best Lives
The Apex Ophthalmology Difference
We treat our clients like we want to be treated – with respect, honesty, empathy and kindness.
We treat our patients as if they were our own pets – with love and gratitude.
We make it easy for you to understand how to help your pet.
The most experienced medical and surgical
veterinary ophthalmology team in Colorado.
veterinary ophthalmology team in Colorado.
Our Team
Leaders in Veterinary Ophthalmology

Tanja Nuhsbaum - DVM, MS, Diplomate ACVO
Veterinary Ophthalmologist and Practice Owner

Trish Gearhart - PhD, DVM, Diplomate ACVO
Veterinary Ophthalmologist

Tammy Miller Michau - DVM, MS, Diplomate ACVO
Veterinary Ophthalmologist
Experienced Veterinary Anesthesia Professionals

Nicole Giron
RVT, VTS, AVTAA

What to Expect During Your First Visit
Find answers to your questions about what goes on during the first appointment and directions to our clinic.

What to Expect on Surgery Day
Information to help you and your pet prepare for surgery with our team.

Frequently Asked Questions
Answers to the most common questions about our practice.

Tell Us About Your Experience
Send us feedback.
Apex Veterinary
Ophthalmology Specialists
7100 S Clinton St
Centennial, CO 80112-3353
(turn East on Easter Lane)
Centennial, CO 80112-3353
(turn East on Easter Lane)
Hours of Clinical Operation:
Monday - Friday
8:00 am to 5:00 pm
8:00 am to 5:00 pm
Second Location
34 Van Gordon St Ste #160
Lakewood, CO 80228
Lakewood, CO 80228
(Working alongside Evolution Veterinary
Specialty and Emergency Hospital)
Specialty and Emergency Hospital)
Hours of Clinical Operation:
Monday - Friday
8:00 am to 5:00 pm
8:00 am to 5:00 pm
See what our clients are saying:
Cindy FernandezJuly 22, 2026Trustindex verifies that the original source of the review is Google. Our experience here was amazing! They took such good care of our dog, Papi! And continue to do so. The care, the explanation and genuine treatment has been great. We are confident in what they do is in his best interest. We highly recommend this office, everyone there has been so good, great customer service and top quality vet services by very qualified dr.'s and vet staffDonna SageJune 28, 2026Trustindex verifies that the original source of the review is Google. Dr. Gearhart, I want to thank you and your team for helping my girl, EllieB. Ellie B. has pannus in both eyes, one worse than the other. But when this reddish cloud started to form over her left eye, which is the worst pannus eye, I got scared. A friend had just had a very successful experience at Apex and so off we went to see what was going on. Dr. Gearhart said she had active pannus. I’d never heard of it, nor had any of my friends. Dr. Gearhart, along with her staff, evaluated Ellie B.’s condition and put her on a protocol of pred acetate and tac…… She said that if I followed this for a month we could push the active pannus all back. And she was right. I was vigilant and Dr. Gearhart was right:-) At the end of 30 days it was gone. Not the other pannus, but the active pannus. Ellie B.’s eyes never looked so clear. They are beautiful. She is on a regimen for the rest of her life and that is okay with us. Ellie B. means the world to me. Thank you Dr. Gearhart and team.Dawn BakerJune 23, 2026Trustindex verifies that the original source of the review is Google. We had a great experience at Apex. I felt my cat got excellent care. Dr. Nuhsbaum was so nice and explained things very well! The office is is clean and modern. The entire staff was great. I would strongly recommend this practice.Kevin NydamJune 22, 2026Trustindex verifies that the original source of the review is Google. Very professional and caring people, you can tell they highly care about the animalsRheanna BroucksouJune 22, 2026Trustindex verifies that the original source of the review is Google. Professional, quick, and compassionate. Apex got me in on a same day appointment when my dog really needed it and has helped us through a complicated case. As a tech in the industry Apex hits all the marks and I will continue to recommend them to everyone I know!Alyssa RobinsonJune 10, 2026Trustindex verifies that the original source of the review is Google. I cannot say enough positive things about this clinic and its staff! I brought two of my fur-babies in to be examined and the amount of compassion, professionalism and care that was shown to both my dogs, as well as myself, was amazing. I have a very rowdy pit bull and a blind chihuahua and both of them were handled and cared for in a way that made both them, and I, feel at ease. We met with two doctors, Dr. Nuhsbaum and Dr. Gearhart. You can see the passion in both of these doctors shining through. They have a deep love for their clients and their careers. Both doctors took the time to ensure we understood the anatomy, treatment and preventative measures for our dogs and their conditions. I am very grateful for their time and care. I would also love to give a shout out to the CSR's, assistants and technicians - everyone we encountered was friendly, kind and professional. Thank you all for what you do and for how much love you showed my fur-babies.Google rating score: 5.0 of 5, based on 247 reviews

